Messages in this thread | | | Date | Fri, 25 Mar 2011 14:41:58 -0400 | From | Steven Rostedt <> | Subject | Re: deadlock caused by printk |
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On Fri, Mar 25, 2011 at 03:50:27PM +0100, Peter Zijlstra wrote: > On Fri, 2011-03-25 at 22:30 +0800, Ming Lei wrote: > > > > But seems ftrace can't dump out the messages if system hangs, > > True.
Well, matters how the system hangs. Add in a nmi watchdog or other watchdogs which can also trigger the ftrace_dump_on_oops.
> > > so could > > we introduce a smart and simple "printk" which can be used in any > > contexts? > > I think you could use early_printk() for that, it doesn't bother with > all the syslog muck. >
Heh, I should have read the thread before replying to the first post ;)
-- Steve
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